Rear bumper for an automobile



FIG. 1 is a first perspective view of a rear bumper for an automobile,showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

Areas surrounded by broken lines and shown in half-tone shading form nopart of the claimed design.

CLAIM The ornamental design for a rear bumper for an automobile, asshown and described.